text: // Copyright (c) 2011-2016 The Cryptonote developers
  // Copyright (c) 2018-2020 The Cash2 developers
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "HttpClient.h"
  
  #include <HTTP/HttpParser.h>
  #include <System/Ipv4Resolver.h>
  #include <System/Ipv4Address.h>
  #include <System/TcpConnector.h>
  
  namespace CryptoNote {
  
  HttpClient::HttpClient(System::Dispatcher& dispatcher, const std::string& address, uint16_t port) :
    m_dispatcher(dispatcher), m_address(address), m_port(port) {
  }
  
  HttpClient::~HttpClient() {
    if (m_connected) {
      disconnect();
    }
  }
  
  void HttpClient::request(const HttpRequest &req, HttpResponse &res) {
    if (!m_connected) {
      connect();
    }
  
    try {
      std::iostream stream(m_streamBuf.get());
      HttpParser parser;
      stream << req;
      stream.flush();
      parser.receiveResponse(stream, res);
    } catch (const std::exception &) {
      disconnect();
      throw;
    }
  }
  
  void HttpClient::connect() {
    try {
      auto ipAddr = System::Ipv4Resolver(m_dispatcher).resolve(m_address);
      m_connection = System::TcpConnector(m_dispatcher).connect(ipAddr, m_port);
      m_streamBuf.reset(new System::TcpStreambuf(m_connection));
      m_connected = true;
    } catch (const std::exception& e) {
      throw ConnectException(e.what());
    }
  }
  
  bool HttpClient::isConnected() const {
    return m_connected;
  }
  
  void HttpClient::disconnect() {
    m_streamBuf.reset();
    try {
      m_connection.write(nullptr, 0); //Socket shutdown.
    } catch (std::exception&) {
      //Ignoring possible exception.
    }
  
    try {
      m_connection = System::TcpConnection();
    } catch (std::exception&) {
      //Ignoring possible exception.
    }
  
    m_connected = false;
  }
  
  ConnectException::ConnectException(const std::string& whatArg) : std::runtime_error(whatArg.c_str()) {
  }
  
  }
  